Problems

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
0-1 Sequences	8319	1176	14%	0.00	1586	777	49%	7.0
10 Kinds of People	18214	3718	20%	0.01	3097	2206	71%	5.0
2048	8127	3778	46%	0.00	3626	3106	86%	2.2
3D Printed Statues	9870	4493	46%	0.00	4119	3685	89%	2.1
3D Printer	724	134	19%	0.00	288	102	35%	8.6
3-Sided Dice	2311	200	9%	0.00	377	139	37%	8.6
4 thought	8437	2838	34%	0.00	2800	2332	83%	2.8
A1 Paper	5191	1507	29%	0.00	1507	1191	79%	3.9
Aaah!	28067	13018	46%	0.00	11657	10865	93%	1.5
Abandoned Animal	1952	425	22%	0.03	484	355	73%	5.0
ABC	13410	6036	45%	0.00	5724	5204	91%	1.9
Ab Initio	1047	192	18%	0.09	155	97	63%	7.4
Above Average	8596	3516	41%	0.00	3467	3110	90%	2.0
A+B Problem	7890	776	10%	0.03	1102	362	33%	8.3
A Brief Gerrymander	208	46	22%	0.15	51	31	61%	8.5
Abstract Art	310	91	29%	0.00	85	65	76%	6.0
Abstract Painting	295	115	39%	0.00	127	99	78%	5.0
Absurdistan Roads II	602	210	35%	0.00	206	140	68%	6.8
Absurdistan Roads III	1531	436	28%	0.02	407	309	76%	5.6
Access Points	408	142	35%	0.01	134	104	78%	5.4
A Classy Problem	9565	2383	25%	0.01	2111	1617	77%	4.5
ACM Contest Scoring	6679	4158	62%	0.00	3683	3474	94%	1.6
Add 'Em Up!	748	222	30%	0.01	220	176	80%	3.9
Adding Words	10579	2497	24%	0.00	2410	1858	77%	3.9
A Different List Game	6819	478	7%	0.00	854	172	20%	9.2
A Different Problem	30012	11060	37%	0.00	10180	8835	87%	2.1
Adjoin the Networks	2000	524	26%	0.00	460	360	78%	5.7
Administrative Difficulties	1178	262	22%	0.03	279	191	68%	6.3
Advanced Causal Measurements	86	34	40%	0.10	29	25	86%	5.2
Adventure Begins	250	82	33%	0.06	87	66	76%	4.4
Adventures in Moving -- Part IV	1290	299	23%	0.00	261	215	82%	4.5
A Favourable Ending	1598	422	26%	0.00	386	298	77%	4.5
A Feast For Cats	2156	773	36%	0.00	521	440	84%	4.1
A Flea on a Chessboard	446	97	22%	0.01	106	77	73%	5.8
Air Conditioned Minions	5000	1388	28%	0.00	1461	1102	75%	3.9
Airline Hub	1780	334	19%	0.01	365	208	57%	6.6
Airport Coffee	867	184	21%	0.09	171	121	71%	7.1
Airport Construction	3429	445	13%	0.02	364	198	54%	7.4
Airport Logistics	67	15	22%	0.00	22	15	68%	7.3
Airports	469	144	31%	0.11	126	91	72%	6.3
Akcija	7356	3260	44%	0.00	2959	2634	89%	2.0
Aladin	761	78	10%	0.10	125	30	24%	8.3
Alchemy	112	16	14%	0.02	31	16	52%	9.1
Alea iacta est	32	13	41%	0.34	17	13	76%	6.9
Alehouse	249	99	40%	0.03	77	58	75%	5.2
Alex and Barb	168	48	29%	0.00	67	45	67%	5.9
Alice in the Digital World	3257	878	27%	0.01	855	669	78%	4.3
Alien Codebreaking	242	14	6%	3.23	42	11	26%	9.2
Alien Numbers	2262	1171	52%	0.00	1147	1041	91%	2.1
A List Game	8140	2387	29%	0.00	2264	1901	84%	3.0
All about that base	2830	1115	39%	0.00	1093	916	84%	3.0
All Different Directions	1314	540	41%	0.00	504	440	87%	2.7
Allergy Test	463	132	29%	0.00	151	78	52%	7.7
All Friends	864	164	19%	0.00	156	79	51%	8.9
All is Well	80	21	26%	0.03	21	19	90%	4.9
All Just A Dream	1919	430	22%	0.05	302	215	71%	6.3
All Kill	17	12	71%	0.01	13	12	92%	4.7
Alloys	180	66	37%	0.00	66	59	89%	4.5
All Pairs Shortest Path	8705	1548	18%	0.00	1069	757	71%	5.6
Almost Perfect	7651	1774	23%	0.00	1890	1483	78%	3.4
Almost Union-Find	6542	1173	18%	0.02	1063	610	57%	6.9
Alphabet	1538	759	49%	0.00	777	652	84%	3.3
Alphabet Animals	1900	592	31%	0.00	588	471	80%	3.4
Alphabet Spam	7878	4894	62%	0.00	4022	3859	96%	1.4
Alternative Bracket Notation	208	88	42%	0.00	94	78	83%	5.1
Altruistic Amphibians	393	103	26%	0.24	99	72	73%	4.9
Amalgamated Artichokes	3959	1764	45%	0.01	1573	1374	87%	2.7
Amanda Lounges	1442	422	29%	0.03	381	306	80%	5.3
A Mazing!	2618	595	23%	0.09	283	214	76%	5.2
Amazing Adventures	368	96	26%	0.02	108	76	70%	6.0
Amazing Race	321	87	27%	0.29	90	64	71%	7.3
Ambiguous Result	264	57	22%	0.02	87	54	62%	8.1
Amsterdam Distance	1487	648	44%	0.00	683	562	82%	2.9
A Multiplication Game	730	247	34%	0.00	281	211	75%	4.7
Anagram Counting	3552	1365	38%	0.00	1324	1105	83%	3.0
Andrew the Ant	341	90	26%	0.06	101	78	77%	3.9
A New Adventure	955	146	15%	0.00	161	107	66%	6.1
A New Alphabet	10813	4824	45%	0.00	4463	4123	92%	1.8
An I for an Eye	730	173	24%	0.00	200	139	70%	5.0
Animal Classification	1566	355	23%	0.03	308	203	66%	6.8
An Industrial Spy	1628	854	52%	0.02	643	550	86%	3.3
Another Brick in the Wall	3245	1606	49%	0.00	1541	1410	91%	1.9
Another Candies	7890	2134	27%	0.00	2213	1828	83%	2.8
Another Coin Weighing Puzzle	279	90	32%	0.01	88	72	82%	5.8
Another Dice Game	98	68	69%	0.00	65	57	88%	4.6
Another Query on Array Problem	1561	216	14%	0.05	332	151	45%	7.5
Antenna Placement	139	64	46%	0.00	44	36	82%	5.2
Anthony and Cora	923	245	27%	0.00	282	202	72%	5.2
Anthony and Diablo	3106	1067	34%	0.00	1066	926	87%	2.3
Antiarithmetic?	1474	269	18%	0.01	331	192	58%	7.2
Ants	3638	1605	44%	0.00	1290	1128	87%	2.5
Apaxiaaaaaaaaaaaans!	12922	7892	61%	0.00	6986	6688	96%	1.4
Apostrophe Catastrophe	107	25	23%	0.00	27	18	67%	6.6
Appalling Architecture	641	182	28%	0.00	159	132	83%	4.1
Apparatus	685	171	25%	0.01	138	103	75%	5.7
Apple Market	470	96	20%	0.07	118	60	51%	8.5
Apples, Cherries, and Mangos	408	123	30%	0.02	128	91	71%	6.6
A Prize No One Can Win	2410	943	39%	0.00	846	739	87%	2.7
Aquarium Tank	508	144	28%	0.00	138	109	79%	4.9
Aqueduct Construction	225	74	33%	0.01	56	48	86%	6.8